Shiu discussed the properties of the expected discounted penalty function at ruin in the case of constant force of interest , and from this obtained a lot of new results about the model .
Shiu在经典风险模型下就利息力为常数的情形讨论了破产时刻罚金折现期望的种种性质并由此得到许多关于经典风险模型的新结论。